Concrete-culvert mold.



J. S. McCABE.

CONCRETE CULVERT MOLD.

APPLICATION FILED 0Ec.19. 1911.

1,275,280. Patented Aug. 13, 1918.

, MI [/5 N 70/? W 5 m kin/rah fpwm wa 5%.

' ATTORNEYS v UNITE STATES PATENT, OFFICE.

J OSEPH STEVENS MGCABILOF MINNEAPOLIS, MINNESOTA.

ooncnn'rn cunvnn'r MOLD.

To aZZ whOmit-m'ay concern:

Be it known that I, JOSEPH S.- MOCABE, a citizen of the United States,and a' resident of Minneapolis, in the county of Hennepin and State ofMinnesota, have invented anew and useful Improven'ientin'Concrete-Culvert Molds, of which the following is a specification.

My present invention relates'generally to concrete culvert molds, andmore .part1cu larly to that type 'of mold shown and de scribed inthePatent No. 1243910 granted to me as'assignee' of Henry F. Worley, under.

date of October 23, 1917, the objects of my present inventionbeing theimprovement of certain parts of the apparatus described and claimed insaid patent, in the i terest of strength and durability.

More specifically, my present invention aims to improve the supportingarches of the patent above referred to, in certain respects the detailsof which will be presently brought out, another object being the provision of mold plates of improved constructions so as to render themstronger and more durable.

In the accompanying drawings illustrating my present improvement:

Figure 1 is a transverse sectional view through the parts effected by mypresent invention, illustrating one of the supporting arches inelevation.

Fig. 2 is a detail perspective View of a portion of one of the moldplates, and

Fig. 3 is a similar view of one of the crown plates.

Referring now to these figures, I have indicated generally at 10 one ofthe supporting arches, of which any suitable number may be utilized, andwhich are supported in upright operative position in use, by anysuitable means, as for instance the means shown in the patent abovereferred to, and unaffected by my present improvement.

Each of the supporting arches 10 is formed by bending a section of angleiron to substantially a semi-circular form, and in the patent abovereferred to, the outstanding flange of the angle iron is notched toreceive the flanged portion of the mold plate. My present improvementspropose the elimination of these notches in the outstanding flange ofthe supporting arch, for the reason that they are likely to weaken thesame and greatly reduce its stability, and my improvements propose tosubstitute therefor,

: I, Specification of Letters Patent. Patented Aug. 13, 1 918.Application filed December 19, 1917. Serial No; 207,872.

a plurality of "radiating lugs 11, disposed flatwise against theoutstanding flange 12 of the arch, with inner butt portions en gagingthe outer face of the lateral flange 13 of thearch, so that in orderto'rigidly secure the several lugs in place, a single connecting bolt 14extending through the same and through the arched flange 12, issuflic'ient.

The outer portions of the several lugs 11 have upstanding books 15 whichengage the flanged portions of the several mold plates 16,-which'latterextend in their length between two or more of the supporting arches 10and have portions lapping one another circumferentially of the arches.

Each of the mold plates 16 has an angular flange 17 along one edge, andthis angular flange 17 is, in accordance with my present invention,provided with an extension 18 bent inwardly along a portion of the innerface of the flange 17 for a portion of the length of the said extension,the latter being bent angularly at 19 across the angle between the plate16 and its flange 17 and having its free edge 20 paralleling a portionof the said mold plate 16. The opposite or free edge of the mold plateis turned in wardly thereon, as indicated at 21 and seen particularly inFigs. 1 and 2, so that the two edges are thus reinforced the flanged end17 being more heavily reinforced by Virtue of the fact that it is thisportion of the mold plate which is engaged by the outer hooked end ofthe respective lug 11.

It is obvious that the portion of the extension 18 paralleling theflange 17 reinforces the latter, while the portion 19 of the extension18, in consideration of the fact that its edge 20 parallels a portion ofthe plate 16, forms an effective brace for the angle between the plate16 and its flange 17.

As seen in Fig. 1, the several mold plates are utilized in lappedrelation from both ends of the arch 10 toward the upper central portionof the latter, the remaining space at the upper central portion of thearch loeing occupied by a crown plate 22, which latter is in accordancewith my in vention, provided with extensions at its opposite edges,portions of which parallel its inner side faces as indicated at 23 inFig. 3, and portions 24; of which are bent inwardly at angles, so thatthe side portions of the crown plate 22, that is those portions whichlap portions of the adjacent mold plates 16 1. concrete culvert moldincluding sup porting arches-formed of curved anglebarsf a plurality oflugs carried.-thereby,;each oftsaid lugs being secured to theoutstanding flangexof the arch and having an:- inner 'en larged endabutting the lateral-flange of the.

arch and being provided with .a hook -pro,-- jectingbeyond the arch, anda plurality-of flanged moldplates, the flanges-ofiwvhich' areengaged bythe outerhooks ofthe -several-- supporting.lugs.-

2. v A concrete eulvert'mold includingasup porting arches and moldplates supported-,-

by the arches,- each ofvsaid mold'platesxhaving an angular. fiange alongone edger provided with an extension, the latter? being: 7 bent inwardlytoward the I inner face i of the mold plate and having portionsparalleling: v theinner face of 'the fiangeland the mold plate, for thepurpose described-x copies :of this patent July-beLobtailcl -tofmvmocnts"each, b'yilufemn the diniifloiir "d1 htiiti,

3'. A concrete culvert mold comprising supporting arches, and aplurality of mold 2Efplatos suppoltedbyi tlfe' arehes, each of said moldlates having an angular flange along one e gethereof provided with areverting extension, said extension having portions parai'leling theinner face of theifiangeiand theinner face-of themold plate and having aportion extending across the angle between the mold plate and. its-'flange,@.for the purpose-described.

4. 9 A Looncrete: culvertmold comprising supporting :gtrches,a'pluralit'y of mold. plates supportedby thearches,.and;a crown platelapping: certain of. the mold plates and having -its side edgespnov'idedwan extensions bent inwardly' and at an angle to the plates,

extensionshaving certain .portions which parallel one another, andotherzportionsaxwhi'ch 1" arallelthe inner lower faceof the orown pategforthe urpose descrihed. JQ'SEPHZSTEV NS MCGA'BE. Witnessesa vGEO-15F}. MbDowELn. A,.,R.Y .Ko1HN. a a

